I am hooked on caffeine, in the form of soda. (preferably Dr Pepper) I have been told by a doctor that the amount of caffeine I consume causes me to have heart palpitations, so I can agree it is unhealthy. It is also addictive, as when you stop using you have withdrawl symptoms such as headaches. My pulse is almost never under 100, and I say almost because I assume it slows when I sleep, but I can't donate blood or plasma due to my heart rate.

Outlaw caffeine--legalize weed!!!